William haas



(No Model.)

W. HAAS.

Q CREATING DRAFTS IN GHIMNEYS.

N0. 375,995. PatentedJan. 3, 1888.

N. PEIERS, Phaln-Lilhugnpl UNITED STATES PATENT FFICE.

\VILLIAM HAAS, OF NEW YORK, N. Y.

CREATING D RAFT' IN CHIMN EYS.

SPECIFICATION forming part; of Letters Patent No. 375,995, dated January 3, 1888.

Application filed July 27, 1887. Serial No. 245,450. (No model.) 7

To aZZ whom it may concern:

Be it known that 1, WILLIAM HAAS, of the city, county, and State of New York, have invented certain new and useful Improvements in Creating Drafts in Chimneys by Means of Exhaust-Steam, of which the following is a pipe for the water of condensation, as will appear more fully hereinafter, and finally be pointed out in the claims.

In the accompanying drawings, Figure 1 represents a side elevation of a chimney with my improved means for increasing the draft of the same; and Fig. 2is ahorizontal section on line at m, Fig. 1.

Similar letters of reference indicate corresponding parts.

In the drawings, Arcpresents the end of the chimney,which is preferably formed of atube of glazed earthenware orsuitable vitrified material that is capable of resisting the corrosion produced thereon by the condensation of steam. The exhaust-steam is conducted from the engine by an exhaust-pipe, B, to the chimney, said pipe terminating in one or two discharge-pipes, b 7), below the discharge opening of the chimney-tube A. The chimney-tube A and the exhaust-pipes b b are inclosed by -a chimney-cap, G, ofsufficientsize,which is made of suitable sheet metal, and provided above the chimney-cap A with a conical trough, d, that serves to collect the water of condensation and discharge the same through anozzle, d, to the outside. Asecond annular collector, c, of inverted conical shape, is arranged above the conical trough d, and is made of less width than said trough, so as to shed the water .of condensation into the same. The exhauststeam discharged through. the pipes b 1) into the cylindrical chimney-cap 0 creates a partial vacuum above the mouth of the chimneytube A, and creates thereby a suction in the same, so that the smoke and gases of combustion in the chimney are drawn with increased velocity in upward direction and discharged through the chimney-tube A. The water of condensation from the exhaust-steam is collected in the trough and discharged to the outside of the chimney-cap G bya discharge-nozzle, d. In this manner faulty chimneys which have not sufficient draft to keep the fire in the boiler-furnaces sufficiently bright can be effectively improved and the increased draft required for the boiler-furnace produced in a cheap and effective manner. If it be desired to produce astill greater draft, live steam may be used, which is, however, more expensive than the use of exhaust-steam supplied by the engine.

I am aware that theintroduction of ajet of steam in the Smokestack or chimney of a boiler-furnace for increasing the draft of the same is well known, and I do not claim this feature, broadly, but desire to limit myself to the special means shown for accomplishing the object.

Having thus describedmy invention, I claim as new and desire to secure by Letters Patent-- 1. The combination,with a chimneytube, of a steam pipeor pipes terminating outside of the same, a chimney-cap inclosing the chimney and steam-pipes, a conical trough located above the months of the chimney and steampipcs, and a discharge-nozzle for the water of condensation.

. 2. The combination,with a chimneytube, of asteam pipe or pipes terminating outside of the same, a chimney cap inclosing the chimney and steam-pipes, a-conical'trough located above the mouths of the chimney and steampipes, an inverted conical collector above the trough, and a discharge-nozzle forthe water of condensation from the trough, substantially as set forth.

In testimony that I claim the foregoing as my invention I have signed my name in presence of two subscribing witnesses.

WILLIAM HAAS. 

